DISTRIBUTED PLANT MANAGEMENT DPM diagnostic user guide

This document serves as a comprehensive guide for maintenance personnel, outlining diagnostic operating procedures for Digital Equipment Corporation's Distributed Plant Management (DPM) products. It provides step-by-step instructions on what diagnostics to run, when, and how, for components such as the DECdataway and its ISB11-A controller, DPM01 and VT110 terminal multiplexers, DPM23 and DPM50 Distributed Intelligent Subsystems (DIS), and RT801, RT803, RT805 remote industrial terminals.

The manual is structured into several key areas:

• Maintenance Procedures: Details various standalone, system-level, and internal diagnostics for each DPM product. It includes descriptions of specific diagnostic tasks (e.g., MAINDEC-11-DZKCH, MAINDEC-11-CZKClx, DPMTST, CZKMPx), confidence checks, and troubleshooting flowcharts to isolate problems in terminals, controllers, or dataway cables.
• Diagnostic Operating Procedures: Guides users on "how" to run these diagnostics, covering system setup, installation of diagnostic tasks on customer systems, and execution, often under the RSX-11M/M-PLUS operating system. It explains command modes, unit selection, and error reporting.
• Helpful MCR, System Utility, and Demonstration Programs: Introduces utility programs for monitoring system status (DEVICES, DDS, NISTAT, PEEK, ISBRPT) and demonstration programs for testing terminal functionalities (WSDEMO, FDMTST, DPMTST). It also includes a configuration routine (CBC) for managing DECdataway address assignments.
• Appendix A and Glossary: Provides technical details on DECdataway port connector addressing and definitions of DPM-specific terminology.

The document emphasizes the need for maintenance personnel to be familiar with DPM systems, host computers, LSI-11 systems, and RSX-11M/M-PLUS operation, and warns about the potential impact of diagnostics on live industrial processes.